titanium tetrachloride in dichloromethane T=-78 - 20°C;

in hexane; ethyl acetate; toluene

cyclooctadiene; (η5-C9H7)Co(PPh3)2 1.) toluene, 100 deg C, 60 min, 2.) 100 deg C, 21.5 h; Yield given. Multistep reaction. Yields of byproduct given;